Hierarchically porous Li1.2Mn0.6Ni0.2O2as a high capacity and high rate capability positive electrode material

Duraisamy, Shanmughasundaram; Penki, Tirupathi Rao; Nookala, Munichandraiah

doi:10.1039/c5nj02423d

Cited by 11 publications

(10 citation statements)

References 39 publications

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“…Ma et al [75] reported hierarchical Li 1.165 Mn 0.501 Ni 0.167 Co 0.167 O 2 , which was prepared by the ultrasonic-assisted co-precipitation method with two steps of heat treatment by adopting graphene and carbon nanotubes as the functional framework. These materials exhibit the specific capacity of 277 mAh·g −1 at a rate of 0.1 C and 61 mAh·g −1 at a rate of 10 C ( Figure S6B) ) by the reverse micro-emulsion method using a tri-block co-polymer as a soft template [76][77][78][79]. Soft-template synthesis by the inverse micro-emulsion route is useful for the preparation of small particles.…”

Section: Porous Li-and Mn-rich High-energy-density Cathode Materialsmentioning

confidence: 99%

Study of Cathode Materials for Lithium-Ion Batteries: Recent Progress and New Challenges

et al. 2017

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Amongst a number of different cathode materials, the layered nickel-rich LiNi y Co x Mn 1−y−x O 2 and the integrated lithium-rich xLi 2 MnO 3 ·(1 − x)Li[Ni a Co b Mn c ]O 2 (a + b + c = 1) have received considerable attention over the last decade due to their high capacities of~195 and~250 mAh·g −1 , respectively. Both materials are believed to play a vital role in the development of future electric vehicles, which makes them highly attractive for researchers from academia and industry alike. The review at hand deals with both cathode materials and highlights recent achievements to enhance capacity stability, voltage stability, and rate capability, etc. The focus of this paper is on novel strategies and established methods such as coatings and dopings.

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Section: Porous Li-and Mn-rich High-energy-density Cathode Materialsmentioning

confidence: 99%

Study of Cathode Materials for Lithium-Ion Batteries: Recent Progress and New Challenges

et al. 2017

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“…In addition, after 135 cycles, the modified separators deliver a much higher specific capacity of 126.9 mA h g –1 with higher capacity retention compared with the control separator with 108.8 mA h g –1 . Furthermore, the electrochemical performance in terms of specific capacity at high current for the modified separator is compared with the data related to Li-rich layered cathode materials in the most recently reported publications − (Figure d), which demonstrates improved rate performance by the use of biofilm coating.…”

Section: Resultsmentioning

confidence: 99%

Biofilm Nanofiber-Coated Separators for Dendrite-Free Lithium Metal Anode and Ultrahigh-Rate Lithium Batteries

Nie

Chen

et al. 2019

ACS Appl. Mater. Interfaces

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Rechargeable batteries that combine high energy density with high power density are highly demanded. However, the wide utilization of lithium metal anode is limited by the uncontrollable dendrite growth, and the conventional lithium-ion batteries (LIBs) commonly suffer from low rate capability. Here, we for the first time develop a biofilm-coated separator for high-energy and high-power batteries. It reveals that the coating of Escherichia coli protein nanofibers can improve electrolyte wettability and lithium transference number and enhance adhesion between separators and electrodes. Thus, lithium dendrite growth is impeded because of the uniform distribution of the Li-ion flux. The modified separator also enables the stable cycling of high-voltage Li|Li1.2Mn0.6Ni0.2O2 (LNMO) cells at an extremely high rate of 20 C, delivering a high specific capacity of 83.1 mA h g–1, which exceeds the conventional counterpart. In addition, the modified separator in the Li4Ti5O12|LNMO full cell also exhibits a larger capacity of 68.2 mA h g–1 at 10 C than the uncoated separator of 37.4 mA h g–1. Such remarkable performances of the modified separators arise from the conformal, adhesive, and endurable coating of biofilm nanofibers. Our work opens up a new opportunity for protein-based biomaterials in practical application of high-energy and high-power batteries.

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Section: Resultsmentioning

confidence: 99%

“…Furthermore, due to the existence of pores and voids,t he particles can withstand the expansion/ contraction of volumeduring charge/dischargec ycles.T his can prevent pulverization of the electrode and lead to excellent cycling stability. [24,25] In addition, the surfacee lements and valence states of LMCN-MRs are detected by XPS (Figure4). The binding energy of Ni 2p 3/2 is around8 54.5 eV with as atellite peak at about 863.3 eV,w hich implies that Ni ions are in the + 2s tate.…”

Section: Resultsmentioning

confidence: 99%

Template‐Assisted Synthesis of a One‐Dimensional Hierarchical Li_1.2Mn_0.54Ni_0.13Co_0.13O₂ Microrod Cathode Material for Lithium‐Ion Batteries

Liu

Lü²,

Xiang

et al. 2016

ChemElectroChem

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A lithium‐rich layered 1D hierarchical Li1.2Mn0.54Ni0.13Co0.13O2 microrod has been synthesized through a facile template‐assisted strategy through chemical lithiation of a rodlike MC2O4⋅2 H2O (M=Ni, Co, Mn) oxalate precursor that is obtained from a two‐step coprecipitation route without the use of any surfactants. The chemical composition, structure, and morphology of the as‐prepared lithium‐rich layered material are well characterized, and the resultant Li1.2Mn0.54Ni0.13Co0.13O2 material presents an ordered 1D microrod morphology and consists of interconnected nanosized subunits (≈200 nm) with a highly porous structure. Because of the hierarchically ordered 1D microrod structure, Li1.2Mn0.54Ni0.13Co0.13O2 as a cathode material exhibits superior reversible capacity, rate capability, and cycling performance compared with its bulk counterpart, which delivers high specific discharge capacities of 260 and 118 mA h g−1 at current rates of 0.1 and 5 C, respectively, and a high discharge capacity of 170 mA h g−1 can be also maintained even after 200 cycles at 2 C, corresponding to a capacity retention as high as 89.6 %. The remarkable electrochemical performances can be related to the unique 1D rodlike porous micro–nano hierarchical structure, which can facilitate the diffusion of Li+ ions and strengthen the structural stability of the lithium‐rich layered cathode materials.

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Hierarchically porous Li_1.2Mn_0.6Ni_0.2O₂as a high capacity and high rate capability positive electrode material

Abstract: Lithium-rich manganese oxide with dual porosity as the cathode material for the next generation high energy density Li-ion batteries.

Cited by 11 publications

References 39 publications

Study of Cathode Materials for Lithium-Ion Batteries: Recent Progress and New Challenges

Study of Cathode Materials for Lithium-Ion Batteries: Recent Progress and New Challenges

Biofilm Nanofiber-Coated Separators for Dendrite-Free Lithium Metal Anode and Ultrahigh-Rate Lithium Batteries

Template‐Assisted Synthesis of a One‐Dimensional Hierarchical Li_1.2Mn_0.54Ni_0.13Co_0.13O₂ Microrod Cathode Material for Lithium‐Ion Batteries

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Hierarchically porous Li1.2Mn0.6Ni0.2O2as a high capacity and high rate capability positive electrode material

Abstract: Lithium-rich manganese oxide with dual porosity as the cathode material for the next generation high energy density Li-ion batteries.

Cited by 11 publications

References 39 publications

Study of Cathode Materials for Lithium-Ion Batteries: Recent Progress and New Challenges

Study of Cathode Materials for Lithium-Ion Batteries: Recent Progress and New Challenges

Biofilm Nanofiber-Coated Separators for Dendrite-Free Lithium Metal Anode and Ultrahigh-Rate Lithium Batteries

Template‐Assisted Synthesis of a One‐Dimensional Hierarchical Li1.2Mn0.54Ni0.13Co0.13O2 Microrod Cathode Material for Lithium‐Ion Batteries

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Hierarchically porous Li_1.2Mn_0.6Ni_0.2O₂as a high capacity and high rate capability positive electrode material

Template‐Assisted Synthesis of a One‐Dimensional Hierarchical Li_1.2Mn_0.54Ni_0.13Co_0.13O₂ Microrod Cathode Material for Lithium‐Ion Batteries